Line 1: Enter the domain name this mail server will be used for as well as any other domains hosted on this machine. This will allow you to configure all of the domains to send mail to a single account. Separate the domains with spaces. If you aren’t using any other domains, enter the main domain only.

Line 2: This points postfix to the alias map at
/etc/postfix/virtual which we will be creating in the next step. This file will describe where to forward mail sent to certain domains and/or mailboxes.

Write the following to
/etc/postfix/virtual, adding domains and mailboxes you’d like to be forwarded:

1

2

3

4

5

6

webmaster@notblog.org notblog

sysadmin@notblog.org notblog

info@notblog.org notblog

webmaster@maybeblog.net notblog

webmaster@ablog.com notblog

Then run
postmap to optimize the alias map. Postfix will read the file much more quickly if this step is taken.